/* | |
* Copyright 1999-2011 Alibaba Group. | |
* | |
* Licensed under the Apache License, Version 2.0 (the "License"); | |
* you may not use this file except in compliance with the License. | |
* You may obtain a copy of the License at | |
* | |
* http://www.apache.org/licenses/LICENSE-2.0 | |
* | |
* Unless required by applicable law or agreed to in writing, software | |
* distributed under the License is distributed on an "AS IS" BASIS, | |
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
* See the License for the specific language governing permissions and | |
* limitations under the License. | |
*/ | |
package com.alibaba.dubbo.rpc.cluster; | |
import com.alibaba.dubbo.common.Adaptive; | |
import com.alibaba.dubbo.common.Extension; | |
import com.alibaba.dubbo.rpc.Invoker; | |
import com.alibaba.dubbo.rpc.RpcException; | |
import com.alibaba.dubbo.rpc.cluster.support.FailoverCluster; | |
/** | |
* Cluster. (SPI, Singleton, ThreadSafe) | |
* | |
* <a href="http://en.wikipedia.org/wiki/Computer_cluster">Cluster</a> | |
* <a href="http://en.wikipedia.org/wiki/Fault-tolerant_system">Fault-Tolerant</a> | |
* | |
* @author william.liangf | |
*/ | |
@Extension(FailoverCluster.NAME) | |
public interface Cluster { | |
/** | |
* Merge the directory invokers to a virtual invoker. | |
* | |
* @param <T> | |
* @param directory | |
* @return cluster invoker | |
* @throws RpcException | |
*/ | |
@Adaptive | |
<T> Invoker<T> merge(Directory<T> directory) throws RpcException; | |
} |